`Supportssecurecoding` Crashes When Using Optimize For Speed Option

At improvement time, we have static analysis tools in Xcode, and runtime metrics when running our app by way of Xcode. When working on system, we have crash reports that explain issues. We have Xcode diagnostics which could be switched on to instrument our app in an area of curiosity. There are third party tools which we are in a position to use to look inside our app binary to assist us understand what is happening. Furthermore, macOS also provides lots of similar functionality from the command line. Note much of the code in our apps is both in first get together frameworks, or third celebration libraries, for which we typically don't have the supply code. When an utility crash appears after a current code change, it can be simple to purpose in regards to the crash and have a look at the related code adjustments. Often, crashes just seem as a result of a change in operating setting. For instance, the app runs fantastic in the Office however crashes on the customer Site. We don't have time to get into why, however need a quick repair or workaround.

Another widespread problem situation arises when a model new project is being explored. This is the place we have no prior experience with the code base however immediately face crash issues after compilation and running the app. That is those crashes which didn't end up with a proper crash report returned to us. Sometimes this happens as a outcome of third party crash reporting framework that's faulty. In this chapter we concentrate on first celebration reasons for failed crashes, and clarify some scenarios that might be the trigger. Symbolification is the method of mapping machine addresses into symbolic addresses meaningful to the programmer possessing the source code. Instead of seeing machine addresses, we wish to see operate names . We went from using HOWTO knowledge to using tooling to get a baseline degree of knowledge. This journey from trying on the artefacts of a problem to getting to the foundation of what needs to be carried out is a standard theme throughout crash dump analysis. It cannot be achieved by just specializing in the HOWTO of comprehending crash stories. We need to modify hats and see things from different views in order to actually make progress. The fourth column is the positioning at which the code is working , or the location that is making a operate call . For symbolicated crashes, we are going to see the symbolic form for the tackle. This will embrace a positional offset from the beginning of a perform to reach the code calling the child perform. If we now have only brief functions, this offset will be a small worth. It means a lot less stepping by way of code, or much less reading meeting code when performing analysis. That is another reason for keeping our functions quick. If our crash isn't symbolicated then we will just see a reminiscence address worth.

The prime of stack, or most lately run code, is in frame 0. One reason for writing code with significant perform names is that the decision stack describes what's going on conceptually. Using small single-purpose capabilities is nice follow. It serves the needs of both diagnostics and maintainability. Sometimes we may have included a third get together binary framework in our project for which we don't have the source code. It is nice follow for the seller to supply symbol info for their framework to allow crash dump analysis. When image information isn't obtainable, it's still possible to make progress by applying some reverse engineering. When a user sees our program crash, there isn't any debugger. This contains the machine addresses where the problem was seen. Symbolification can convert these addresses into significant source code references. This teaches us that crashes are rather more about environment than about source code. At beta time, we have the Xcode Organizer which may report on how our app is performing within the subject.

Xcode retrieves efficiency and crash info for these beta clients which have opted-in to such information collection. Third party crash reporting instruments and services may be employed to offer further context to the issues. In this chapter we assume the app has not done this, and subsequently the Apple CrashReport tool comes into play. In this chapter, we discover potential reasons for crashing because of a change in working setting. Many problems may be dealt with with out getting into logical evaluation of the specifics of the problem at hand. In actuality generally we simply need to make progress, whilst making a note to return and tackle the foundation cause. Within this listing is the runtime engine, runtime_t8027, the translator oahd-helper, a command line tool translate_tool, and different artifacts. Its operation is essentially transparent to finish customers aside from a small startup delay or slightly decrease performance. From a crash dump perspective, we see its presence in phrases of reminiscence footprint, exception helper and runtime helpers. In this chapter we take a glance at crashes on Apple Silicon Macs, crashes arising from using the Rosetta translation system, and crashes arising from unmodified iOS apps operating on macOS. Furthermore we take a glance at new types of crashes which are attainable from multi-architecture code that supports each ARM and Intel CPUs. The MetricKit framework permits apps in their beta or release phase to report diagnostic information to our app. We think of this as a well-defined conduit, whose data would sometimes be passed onto an online service to additional analyze the crash, or diagnostic situation.

This will place third party crash reporting providers on an official API footing somewhat than using a plcrashreporter-based solution. The underlying software engineering problem here is considered one of lifecycle. Part of the applying has a object lifecycle we were not anticipating. The client should have been written to detect the absence of the service as a robustness and defensive programming greatest apply. Most of our focus ought to be on the crashed thread; it's usually thread 0. Note no long period tasks similar to networking may be carried out on the main thread, com.apple.main-thread, because that thread is used to handle consumer interactions. When we now have a EXC_BAD_INSTRUCTION, the exception codes will be the problematic assembly code. Alternatively, the issue could be a decrease stage library that has hand meeting optimizations in it - corresponding to a multimedia library. Handwritten meeting could be the trigger of dangerous directions. The program could have been working standalone with no debugger so where did the breakpoint come from? This will make the system signal the method with the trace lure sign and this makes any out there debugger attach to the method to help debugging. So in the case the place we had been operating the app beneath the debugger, even with breakpoints switched off, we might breakpoint in right here so we will discover out why there was a runtime exception. In the case of regular app operating, there is no debugger so we would simply crash the app. The above code causes the identical disruption to crash reporting on a simulator because it does on target hardware. For the sake of comfort, we concentrate on the simulator target as it's simple to reset, and to check totally different OS versions. We have adapted the command line executable program icdab_thread into an application which merely calls the same underlying code. The purpose for this is because UNIX command line executables usually are not eligible for operating Translated but Applications are. At launch time, we've comparable amenities to what's available at beta time, however we generally have larger scale - more customers, and more crash report instances.

This is usually where the more rare bugs, and unexpected person workflows, present up as a end result of we're one step additional removed from our customer base. This is the place the phased release option within App Store Connect is useful. It will progressively roll out the update of our app to the put in base that have enabled automatic updates. Sometimes the previous dynamic habits of our app needs to be understood in order to resolve why the applying crashed. For example, we could have leaked reminiscence, and then we have been terminated by the system for using too much reminiscence. We might need a data structure and surprise which a half of the code was responsible for allocating it. The Crash Report, shown right here, is clearly to do with temperature. It just isn't clear whether or not the issue is restricted to the app at present working, the well being of the hardware, or the environment the system was in at the time of the problem. None of the code working is understood to generate massive quantities of warmth. To repair this concern, Analytic Troubleshooting is appropriate. For example, if this crash happens to different apps on the identical device even when it is chilly, we will suspect a hardware sensor failure. We want a whole picture of where the problem is seen versus not present to make progress with a great speculation. Since the problem is due to symbolification, it could be clever to clear our construct directory and then do a clear build. Sometimes an Xcode update switches us to a model new object file format that's incompatible. It is worth it checking profiling with one other project, maybe a trivial test program. There are alternative memory evaluation services, such as the Diagnostics Tab for the scheme we are working, so reminiscence evaluation might be done differently.

See the later chapter, Memory Diagnostics, for further information. When crashes occur through runtime libraries, we need to go back to the API specification to find out how we're violating the API contract that resulted in a crash. Keeping an eye fixed on trends permits us to schedule work to repair issues before they turn out to be widespread amongst our prospects. One method to assess influence is to construct analytics into our app. Then the set of steps, and extra broadly, the customer use case, can be studied alongside the crash. Crashes from the most important use circumstances can then be recognized as excessive influence bugs to fix. One benefit of third celebration crash reporting companies is that they allow logs to be recorded that are delivered to the Crash Report server along with the crash. This means no process has directly attached to the process to vary the state of a register. Such actions would be acceptable for implementations of managed runtimes, or debuggers. Outside of these situations, such actions would be suspicious and want further investigation. The Crash Report has a piece enumerating all the binary pictures loaded by the method that crashed. It highlights the fact that there are heaps of supporting frameworks for our apps. The iOS improvement package might seem an enormous set of APIs, but that's just the tip of the iceberg. When we now have a memory concern, EXC_BAD_ACCESS, with SIGSEGV or SIGBUS, the faulty reminiscence reference is the second variety of the Exception Codes quantity pair. For this sort of problem, the diagnostics settings inside Xcode for the goal scheme is related. The handle sanitizer ought to be switched on to see if it might spot the error. Security code typically provides back generic error codes, not particular fault codes to permit for future code enhancement and avoid leaking internal details .

A crash dump in a security library may point out exactly the kind of security issue, and help us appropriate some knowledge construction handed into the library a lot earlier on. The primary conceptual model of our application software sitting on an Operating System which itself sits on hardware is generally sufficient. However, modern pc techniques have multiple co-operating subsystems. For instance, a MacBook Pro with TouchBar will have the primary operating system, macOS, but additionally Bridge OS providing the TouchBar interface, disk encryption and "Hey Siri! The multimedia and networking chips in our computers are superior elements and might have their own real-time Operating Systems running on them. Our Mac software program shall be simply one of many purposes working on macOS. We ought to attempt compiling and operating different Xcode targets within the similar project. Sometimes a selected target is the one that units up the needed setting as part of the build. If we run the icdab_rosetta_thread software, clicking on Start Threads Test, after one minute we have a crash. Comparing the crash dump between Native and Translated instances, we see differences in the Crash Report. This program makes an attempt to call thread_set_state after which deliberately crashes 60 seconds later using abort. It is not able to truly do that because of recent safety enhancements in macOS to stop the usage of such an API; it was an attack vector for malware. Nevertheless, this program is interesting due to a carefully associated artifact upon crashing, the number of occasions task_for_pid had been called. Jetsam ReasonMeaningper-process-limitThe resident reminiscence limit was reached. We have a rich set of instruments out there to assist crash dump evaluation. When used correctly they can save an enormous amount of time. One method to consider crash dump tools is to consider the place alongside the software program improvement and release cycle we are on. The above code has stringProperty that is imagined to model the case where the info token was recorded as a string within the consumer defaults as a substitute of as NSData. Perhaps it was manually copy-pasted into the plist file of the consumer defaults.

If the initWithData method is passed an NSString it can't create an NSData object. The next part of the Crash Report is the digital reminiscence summary and area kind breakdown. If we have a graphics heavy app that renders pages of a document, we might have a look at how massive the CoreUI picture knowledge region is, for example. See beneath for details on each Termination Code.Triggered by ThreadThe thread within the course of that caused the crashIn this part, an important item is the exception type. QuickEdit as a outcome of its age only used guide reference counting in Objective-C. Despite this, it had a reliability of 99.5% based on app analytics. Only about 5% of engineering effort was needed to maintain this stability over time once the initial issues had been addressed. If we're just beginning our software developer journey, or we now have restricted funds, then simply stick to the standard Xcode tooling, macOS command line, and the open source class-dump device. This underlies the point about there being two entities involved, this system and the working surroundings . Having correct source code does not assure crash free working. When we see a crash we'd like to consider the operating setting as a lot as the code itself. When a program is being debugged, it's conceptually in an analogous state to when it's crashed. That is as a result of we want to go into the process and inspect its state . Instead, the complete platform jams up and wishes a reset. The remaining bits can therefore be used to store a hash worth computed after combining the supposed pointer address with a context worth and a secret key.

When such an app crashes, we get a crash report that is a macOS crash report, but many of the particulars contain iOS libraries. The dynamic loader does many duties in getting ready our binary for execution. If our binary references libraries, it'll load them. This is why it's attainable to crash even earlier than any code in main.m is called. Later on, we will study the method to diagnose such issues. Note right here we use the term "iOS Crash Report" to mean a Crash Report that got here from a physical goal gadget. After a crash, apps are sometimes debugged on the Simulator. The exception code could additionally be completely different in that case as a outcome of the Simulator makes use of a special methodology to cause the app to stop beneath the debugger. On iOS, the fundamental idea is that we install a profile, which alters our system to supply extra logging, and then we reproduce the crash . The system vibrates briefly to indicate it's running a program, sysdiagnose, which extracts many log files. This can take 10 minutes to process, and produces a large file . This setting should solely be made on debug builds as a outcome of the code will now not launch objects. Its performance profile is equal to leaking each object that should have been deallocated. This downside, itself, doesn't make our app crash instantly. If we rotate the gadget, the latent fault is triggered and we get a crash. By enabling the address sanitizer, we immediately get a crash. Otherwise, we'd have wasted lots of time in debugging display rotation associated code. The best way to diagnose such an issue is for the applying to log its configuration before trying to load optional software program frameworks at runtime.

Displaying A Image Background With Acf Options

The dynamic content can also come from custom fields, which opens a world of possibility. So, if you had ACF plugin installed and had set image inputs, they would also be shown as an option for an image. You may also display fields your custom fields on the page, custom post type, user, taxonomy term, comment, media and custom options pages! To get an idea of the different content you can edit in ACF, please look over the available field types. Dynamic Content is content that is stored in your website's database which is then dynamically generated and displayed on a post or page.

Possible examples of dynamic content include the website title, tagline and logo, page names, post titles, featured images, post IDs, timestamps and excerpts. Dynamic content can also come from custom content created using custom fields. With dynamic content, you can display post titles, featured images, custom fields, fields from Advanced Custom Fields and define the exact location and style.

Once you update the values, all elements that display dynamic content will update their values automatically. With Advanced Custom Fields, you can use WordPress in new and interesting ways. If you want to further extend your site, you can learn how to create custom post types and then add custom fields to those new post types. I got my header images on my page now with the advanced custom fields plugin. I want to give my php code a div class or something i guess because i can't find the class name custom_headers when i inspect my site.

You can put this callout example into a Part-type Themer layout, which you can assign to a specific position outside the content area on any pages you specify. Beaver Themer lets you set field connections or field connection shortcodes to grab the contents of custom fields that you've created with the Advanced Custom Fields plugin . Post Information conditions allow you to display elements based on the post's meta information, such as it's category, tag, author and type.

These conditions can be combined with Theme Builder template assignments, giving you two layers of conditions and the ability to create more dynamic layouts. Go to the custom fields meta box and select your custom field from the drop down menu and enter its value. Click on 'Add Custom Field' button to save your changes and then publish or update your post. But like all of Divi's dynamic features, this appears to be in its infancy.

I see more block plugins like Stackable adding dynamic data and conditionals so I hope Divi keeps up to stay relevant in an ever increasingly block focused WordPress. For example, you can enable floating promotional banners that automatically appear at the start of a sale, and disappear at the end of a sale. You can display unique content to users when they log in, and unique elements to specific users based on their user role. Divi comes with a wide range of conditions and so many unique ways to use them, so let's dig in and explore the details of this powerful new feature. Choose this item if your ACF field group's Location setting is any choice in the Post or Page category.

The next screen will ask you to provide the ACF custom field type and field name. Some custom field types have extra options, such as image size for Image field types or output type for Checkbox and Select field types. The above code is all well and good – as long as you're not wanting to show the page header on a custom post type. Let's make a small addition that will allow the Featured Image to be displayed as the background image on a custom post type page header.

We're testing to see if we're dealing with a single post of a custom post type. Advanced Custom Fields brings limitless possibilities for adding extra data to WordPress content by creating custom fields. Elementor allows you to dynamically insert the ACF custom field data directly into your Elementor designs with all the styling options you've come to expect from Elementor. CMB2 is a developer's toolkit for building metaboxes, custom fields, and forms for WordPress that will blow your mind. Easily manage meta for posts, terms, users, comments, or create custom option pages. CMB2 is a complete rewrite of Custom Metaboxes and Fields for WordPress.

New image field with (upload/remove) buttons to allow you to edit category or taxonomy image in quick edit. When you click the upload button the wordpress upload box will popup, upload or select image then press use this image. As you insert a single image element, you can replace the static image with dynamic content to display your post feature image.

The same can be done with background images in Design Option for all elements including rows and columns. The WP Display Header plugin enables you to display specific header images on posts, pages, custom posts types and archives pages. No coding skills needed however its not customizable either therefore not as flexible and powerful. There may also be other options, depending on the ACF field type and the Beaver Builder setting.

For example, if you select an ACF Image field type, there's also an image size setting you can choose, as shown in this screenshot. In the back-end, WordPress has built-in meta boxes for categories, publishing, tags, and the featured image. You can build a custom one which has the HTML form fields to provide an interface to work with the custom fields . The code creates a custom field which uses the genesis_header hook and only works using conditional tags which in this case work for single posts and pages.

You could change the conditionals to work for archives and category pages if needed. For serving up regular retina assets that don't require background images I highly suggest using Retina.js. Example "regular-image-" would show up instead of "regular-image-name.png". There are tons of options and extensions to keep you busy or add only what you need.

The Advanced Custom Fields plugin makes it very easy to add custom fields to a Taxonomy Term, please follow the steps below. Once you have created a field group and assigned it to appear for a Taxonomy Term edit screen, editing the field values is done by navigating to the proper taxonomy. I am trying to set an image uploaded through custom fields plugin and have it display as the background of a div . In AE – Custom Field widget, specify the key/slug of your subfield in the name field.

Then, place multiple custom field widgets to add the data from all the custom fields . Then, design it in the same way as you want your individual repeater item to be displayed. You can also replace the text block with the value from your custom fields (ex. post title, ACF field).

The same can be done with other text-type elements like headings, buttons, etc. For the second area of dynamic content, another text block was added, and the Post Terms Type of Dynamic Content was selected, with the taxonomy of Categories. The Separator field was also filled in to control how the various categories are separated on the post. Note how there in an option for the categories to link to a term page, and also fields for Before and After text. This would be static text that would display before or after the dynamically generated content. This is found in options where you can add content.

Titles, text blocks, images, content areas in content boxes etc. It's all about replacing static content with dynamic content. The whole point of dynamic content is that it can pull data directly from your database. So for example, if you give a post a dynamic title, if you update the post name at any point, the title on the page will be updated automatically. You can set a field connection for most color settings in Beaver Builder. For example, you can set a custom color background for a row in a Singular Themer layout.

The screenshot shows that the field connection choices are all related to Color, which means the ACF field type should be Color Picker. For example, you can only add an ACF field of type Gallery to a Gallery module. You can see the difference in the following screenshots.

When the ACF plugin is installed, the list of field connections in Beaver Builder modules displays an Advanced Custom Fields section. This screenshot shows most of ACF field connection items – in this case, generated by the HTML module in a Part-type Themer layout. When you create some sort of meta boxes or maybe a custom options page, sometimes you need fields like an image upload button or a file uploader. Now, once you've added some custom field data in the WordPress editor, you need a way to display that information on the front-end of your site. If the podcast field is empty, don't show the podcast section.

If the featured video field is empty, don't show the featured video. If a custom field is checked yes or no, show or don't show, etc. I currently just had to create my own post template with these conditions, which is fine, but it's not visual and the way it displays galleries is pretty bad.

You can use Divi's condition options to display elements based on date and time, and even create recurring content schedules. In this example, I am building a website for a Pizzeria. The background field allows you to set background properties for a post. You can set background color, select an image and set other background settings. In the Oxygen editor add the element for which you would like to set different background images at different media queries. This post will be pretty direct and to the point to give you the most bang for your time, as I like all technical posts to be.

But let me just preface this with a few items so you know what this is not necessary for. Another simple example of using dynamic content is shown below, where the Featured Image Dynamic Content Type has been added as a background image to a Container. This was added in the BG tab of the Container element, and under the Image tab, the Background Image option was populated with the dynamic content. If we look at the back end of the post, we can easily see where this dynamic content is coming from. The post date and time section, the categories and the featured image set here will all automatically show on the page if edited.

Also the tags section, while not used in this post, could also be a dynamic content area. I had Text widgets placed in a template that would pull data from an ACF form on my projects post type. I have the latest updates for Elementor Pro and my other plugins. I've been successful in getting my ACF fields with text type to show up in Text/Heading Elementor Widgets using "Dynamic ACF Field", however no other field types are working. If you choose an image widget in Elementor and select "Dynamic" for image, then "ACF Field" and then your ACF Image Field type, the image doesn't show. Many times when creating a custom WordPress theme, you may want to give your client a simple way to edit the background image of a hero content area.

Let's take a look at how easy it can be to create this option for your client. All that's needed now is to add the image field to the inline style tag using the_field(") in your php file. The other CSS in the style tag can be moved into your CSS file if you wish, the only bit that is needed is the background url.

I have a custom field for my custom post type categories and tags for an image. This displays on the back end when I am editing tags and categories. Adding a Carousel/Slider with images in WordPress is a common solution to highlight the most popular contents to website visitors. There are sophisticated ready-to-use slider plugins that include a lot of features. However, sometimes they are difficult to configure and performance is not quite as good as expected. Let's create a simple WordPress slider from scratch with ACF slider.

All Visual Composer elements that output either text or single image can be converted into dynamic content. In addition, background values in Design Options can be set to dynamic as well. I was able to set a different header image for the blog page by following the steps you outlined. However, the image is not clickable, and the header right widget disappeared on the page. Is there anything I need to add to the settings to fix this?

Right now it's showing on the blog page, but when I click on a post, the default header image shows up . The plugin settings enable you to determine where the meta box for the custom field displays. You'll also need to remove the header image if using the custom field to add a different one otherwise 2 header images will display.

If you have not already, create a Advanced Custom Fields field group having two Image-type custom fields labelled say, "Desktop Background" and "Mobile Background". Set the Return Format to Image URL. Set the group to appear on your desired post type, say, Page for example. I have created an options page in ACF Pro and Have added a image field called company logo. I have genesis removing the site title but when i add in the ACF call it does not work. If someone can take a look at what I have and give me some advice that would be great. This same technique can be used for more than just Hero sections.

You could also use it in the header section of each page. As we did with the Hero background image, you could setup a a custom field for the client to edit. A movie review website might use ACF to set up several custom fields, including Director, Year, Genre, Rating, etc. ACF makes it easy to add this data to each movie review, while Elementor brings the magic needed to beautifully display the data on the front end. Using CSS background images is popular in web development and adding them with Advanced Custom Fields is easy.

You can't use ACF in your CSS files as it is PHP but you can add the fields to inline style tags in your PHP files. I plan to have a slider with dynamic slides showing my recent posts. I would like these to alternate between 3 or 4 different background images, but I do not know how to tell SS3 which images to use.

Find the_content function so you can list your custom field data after the actual content of the post or page. Adding Taxonomy Images in WordPress Upon activation, you need to visit Settings » Taxonomy Images page to configure plugin settings. You will see a list of taxonomies available on your WordPress site.